Bacard,
I just wonder whether we do it differently from all other primaries, as we put a LOT of prep into parents' evenings (we have 2 per year, with written report at the end of the year) and tbh am surprised that parents see them as a waste of time.
I write a bullet-point report on every child which I talk through. All book are available before the meeting, and I will pretty much always refer to them to illustrate the points that I am making. I will always have in mind, for any child, a piece of written work that shows them at their best, at their typical level, and at the level they show their difficulties most obviously in.
I have data for every child from previous year, their targets for the current year, specific tests like verbal or non-verbal reasoning, and the results of any weekly assessments of e.g. spelling, maths facts etc.
I will comment on good things and things to work on in reading, writing, maths (subdivided into topic areas) and science.
We discuss the child's general feelings about school, any friendship or social issues etc. We always discuss specific things a parent can do to help at home.
As I am in upper KS2, we often discuss secondary school aspirations / choices, especially later in the year.
For any children at any level in the SEN list, or having any individual or small group intervention, we provide updated copies of all paperwork and discuss progress and any changes of intervention strategy, and I always end up with a list of follow-up meetings to book. It's a real push - and very intense - to do 30-32 x 10 minutes like that, but it's what we always do, and I would genuinely question any parent who said 'oh, all of that was a waste of time'.